Bonding and periodic table Thurs

What is the chemical formula of iron(III) sulfide?

• FeS

• Fe₂S₃

• FeSO₃

• Fe₂(SO₃)₃

Tags

NGSS.HS-PS1-2

Strontium and barium have similar chemical properties because atoms of these elements have the same number of

• protons

• neutrons

• electron shells

• valence electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is classified as a metalloid?

• boron

• potassium

• sulfur

• xenon

As the elements in Period 2 are considered in order from lithium to fluorine, there is an increase in the

• atomic radius

• electronegativity

• number of electron shells

• number of electrons in the first shell

Tags

NGSS.HS-PS1-1

Which element is malleable at STP?

• chlorine

• copper

• helium

• sulfur

Based on Table S, which group on the Periodic Table has the element with the highest electronegativity?

• Group 1

• Group 2

• Group 17

• Group 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which trend is observed as the first four elements in Group 17 on the Periodic Table are considered in order of increasing atomic number?

• Electronegativity increases.

• First ionization energy decreases.

• The number of valence electrons increases.

• The number of electron shells decreases.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element tends not to react with other elements?

• helium

• hydrogen

• phosphorus

• potassium

Tags

NGSS.HS-PS1-2

Which compound has covalent bonds?

• H₂O

• Li₂O

• Na₂O

• K₂O

Tags

NGSS.MS-PS1-1

What occurs during this reaction?

• A bond is broken and energy is absorbed.

• A bond is broken and energy is released.

• A bond is formed and energy is absorbed.

• A bond is formed and energy is released.

Tags

NGSS.HS-PS1-4